Sensorless speed and direct torque control of doubly fed reluctance motors

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The brushless doubly fed reluctance machine (BDFRM) is a potential low cost alternative to the existing solutions in applications with limited variable speed ranges. The cost effectiveness of the BDFRM drive can be attributed to the possibility of using a partially rated power electronic converter and reliable, maintenance-free operation afforded by the absence of brush gear. This paper proposes a load model based observer algorithm for speed and direct torque (and flux) control (DTC) of this machine without using a shaft position sensor. The preliminary results have demonstrated good controller performance over the desired speed range for different loading conditions.
Original languageEnglish
JournalInternational Journal of Power and Energy Systems
Issue number4
Publication statusPublished - 2008


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